This the thing with the CoC story. You can't MAKE someone pay for a CoC.
Or MAKE them pay for work to make it compliant.

Yet if I'm the last one to touch a DB it's my fault ����.

Still not entirely sure where we stand.
We did a 12kw Sunsynk install on a, I'd guess, R6000000 house.

There was a CoC, which didn't look bad and we did a few basic tests before starting (Earth fault loop, visual checks etc)

Install was done over 3 days, commissioned - no worries.
Start doing proper testing and find a shit show (no earth readings etc). Then twist and tape special hidden.
Spent another 3 days fixing bits and pieces to get it to point where is could be signed off but eventually enough was enough.

Gave the customer a report on what we had done and other things that needed attention but they weren't interested (in paying for additional works needed) and we refused to issue the CoC.

They still paid for the solar install but they don't have a CoC from us. Like I said - can only advise, can't make them have the work done.